That's not quite true. Power fluctuations can cause instability or crashes, either of which could lead to data corruption. That said, it's much more likely tha

That's not quite true. Power fluctuations can cause instability or crashes, either of which could lead to data corruption. That said, it's much more likely that a faulty or low quality PSU will be the cause of that rather than the cable, and there's a lot already written out there about why a high quality PSU is important.